public class Example6_1 {
	public static void main(String args[]) {
		China zhang; 
		Japan henlu;
		zhang=new China();   
		henlu=new Japan();  
		zhang.number=32+Computable.MAX; 
		henlu.number=14+Computable.MAX;
		System.out.println("zhang的学号"+zhang.number+",zhang求和结果"+zhang.f(100));
		System.out.println("henlu的学号"+henlu.number+",henlu求和结果"+henlu.f(100));
	}
}
